4143641 has 2 divisors, whose sum is σ = 4143642. Its totient is φ = 4143640.

The previous prime is 4143637. The next prime is 4143647. The reversal of 4143641 is 1463414.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4000000 + 143641 = 2000^2 + 379^2 .

It is a cyclic number.

It is not a de Polignac number, because 4143641 - 2² = 4143637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4143647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2071820 + 2071821.

It is an arithmetic number, because the mean of its divisors is an integer number (2071821).

Almost surely, 2^4143641 is an apocalyptic number.

It is an amenable number.

4143641 is a deficient number, since it is larger than the sum of its proper divisors (1).

4143641 is an equidigital number, since it uses as much as digits as its factorization.

4143641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 23.

The square root of 4143641 is about 2035.5935252402. The cubic root of 4143641 is about 160.6179359185.

It can be divided in two parts, 4 and 143641, that multiplied together give a square (574564 = 758²).

The spelling of 4143641 in words is "four million, one hundred forty-three thousand, six hundred forty-one".